Page 18 - Lab Manual & Project class 12

LABORATORY MANUAL CHEMISTRY

(iii) Which of the acids, hydrochloric or nitric, would be suitable to make the medium acidic in
this experiment? Explain your answer with reasons.

(iv) Out of the reactions (1) and (2) given below:

–
2–
–
IO + 3SO → I + 3SO 2– (1)
3 3 4
–
+
–
5I + IO + 6H → 3H O + 3I (2)
3 2 2
which could be the rate determining reaction? What is the molecularity of the rate
determining reaction?
Maxbrain Chemistry
3–
2–
(v) Can AsO be used in place of SO in the above reaction? Support your answer with
3 3
proper reasoning.
(vi) Why is the concentration of potassium iodate solution kept higher than the concentration
of sodium sulphite solution?

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24-04-2018